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Investigation of Rf Transmission Properties of Human Tissues : Volume 4, Issue 13 (06/09/2006)

By Werber, D.

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Book Id: WPLBN0003977917
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: Investigation of Rf Transmission Properties of Human Tissues : Volume 4, Issue 13 (06/09/2006)  
Author: Werber, D.
Volume: Vol. 4, Issue 13
Language: English
Subject: Science, Advances, Radio
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Biebl, E. M., Schwentner, A., & Werber, D. (2006). Investigation of Rf Transmission Properties of Human Tissues : Volume 4, Issue 13 (06/09/2006). Retrieved from http://community.worldlibrary.net/


Description
Description: Technische Universität München, Fachgebiet Höchstfrequenztechnik, Arcisstraße 21, 80333 München, Germany. RF transmission properties of human tissues were investigated in the frequency range from 50 MHz to 1 GHz. This work was motivated by the increasing interest in communication links between medically active implants and external interrogator units. We investigated theoretically and experimentally the transmission loss between an implant and an external interrogator unit. We assumed that due to the size of the implant a maximum area of only 1 cm2 is available for the printed circuit antenna. The size of the external interrogator antenna is less restricted. The maximum depth of the implant beneath the surface of the body was assumed to be 10 cm. For the simulations we took the dielectric properties of skin, fat and muscle as published in the literature. For the measurements, an artificial muscle dielectric proposed in the literature was used consisting mainly of a mixture of water, sugar and salt. In simulation and measurements the reactive part of the impedance of the antennas was compensated numerically. In simulations and measurements we obtained a transmission loss between 30 dB around 100 MHz and 65 dB around 900 MHz.

Summary
Investigation of RF transmission properties of human tissues

Excerpt
Gabriel,~C., Gabriel,~S.: Dielectric properties of biological tissues: I-III, Physics in Medicine and Biology, 41, 2231–22903, 1996.; Hartsgrove,~G., Kraszewski,~A., and Surowiec,~A.: Simulated Biological Materials for Electromagnetic Radiation Absorption Studies, Bioelectromagnetics, 8, 29–36, 1987.; Wolf,~B., Kraus,~M., and Sieben,~U.: Potential of microsensor-based feedback bioactuators for biophysical cancer treatment, Biosensors and Bioelectronics, 12, 301–309, 1997.

 

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